Low-Voltage, Single Supply, Dual SPST,
SPDT Analog Switches
The Intersil ISL84541–ISL84544 devices are precision, dual
analog switches designed to operate from a single +2.7V to
+12V supply. Targeted applications include battery powered
equipment that benefit from the devices’ low power
consumption (5µW), low leakage currents (100pA max), and
fast switching speeds (t
= 35ns, t
ON
= 25ns). Cell phones,
OFF
for example, often face ASIC functionality limitations. The
number of analog input or GPIO pins may be limited and
digital geometries are not well suited to analog switch
performance. This family of parts may be used to “mux-in”
additional functionality while reducing ASIC design risk. Some
of the smallest packages are available alleviating board space
limitations, and making Intersil’s newest line of low-voltage
switches an ideal solution.
The ISL84541/ISL84542/ISL84543 are dual singlepole/single-throw (SPST) devices. The ISL84541 has two
normally open (NO) switches; the ISL84542 has two normal ly
closed (NC) switches; the ISL84543 has one NO and one NC
switch and can be used as an SPDT. The ISL84544 is a
committed SPDT, which is perfect for use in 2-to-1 multiplexer
applications.
Table 1 summarizes the performance of this family. For higher
performance, pin compatible versions, see the ISL43120 - 22
and ISL43210 datasheet.
TABLE 1. FEATURES AT A GLANCE
ISL84541ISL84542 ISL84543ISL84544
NUMBER OF
SWITCHES
SW 1 / SW 2NO / NONC / NC NO / NCSPDT
3.3V R
ON
3.3V tON / t
5V t
PACKAGES
5V R
ON
/ t
OFF
ON
OFF
2221
50Ω50Ω50Ω50Ω
50 / 20ns50 / 20ns 50 / 20ns50 / 20ns
30Ω30Ω30Ω30Ω
35 / 25ns35 / 25ns 35 / 25ns35 / 25ns
8 Ld PDIP,
8 Ld SOIC,
8 Ld SOT-23,
8 Ld MSOP
8 Ld PDIP,
8 Ld SOIC,
8 Ld SOT-23
8 Ld PDIP,
8 Ld SOIC,
6 Ld SOT-23
Related Literature
Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied .
o
C to 70oC
o
C to 85oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . 300
(SOIC, MSOP and SOT-23 - Lead Tips Only)
NOTES:
3. Signals on NC, NO, COM, or IN exceeding V+ or GND are clamped by internal diodes. Limit forward diode current to maximum current ratings.
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
4. θ
JA
(oC/W)
JA
o
C to 150oC
o
o
C
C
Electrical Specifications - 5V SupplyTest Conditions: V+ = +4.5V to +5.5V, GND = 0V, V
Unless Otherwise Specified
TEMP
PARAMETERTEST CONDITIONS
ANALOG SWITCH CHARACTERISTICS
Analog Signal Range, V
ON Resistance, R
ON
ANALOG
V+ = 4.5V, I
See Figure 5
Matching Between Channels,
R
ON
∆R
ON
R
Flatness, R
ON
FLAT(ON)
NO or NC OFF Leakage Current,
NO(OFF)
or I
NC(OFF)
I
V+ = 5V, I
V+ = 5V, I
V+ = 5.5V, V
Note 7
= 1.0mA, VNO or VNC = 3.5V,
COM
= 1.0mA, VNO or VNC= 3.5V25-0.82Ω
COM
= 1.0mA, VNO or VNC = 1V, 2V, 3VFull-78Ω
COM
= 1V, 4.5V, VNO or VNC = 4.5V, 1V,
COM
o
(
C)
Full0-V+V
25-3060Ω
Full--75Ω
Full--4Ω
25-0.10.010.1nA
Full-5-5nA
= 2.4V, V
INH
INL
MIN
(NOTE 6)TYP
= 0.8V (Note 5),
MAX
(NOTE 6) UNITS
COM OFF Leakage Current,
I
COM(OFF)
COM ON Leakage Current,
I
COM(ON)
V+ = 5.5V, V
Note 7
V+ = 5.5V, V
COM
COM
4.5V, or Floating, Note 7
4
= 4.5V, 1V, VNO or VNC = 1V, 4.5V,
= 1V, 4.5V, or VNO or VNC = 1V,
25-0.1-0.1nA
Full-5-5nA
25-0.2-0.2nA
Full-10-10nA
ISL84541, ISL84542, ISL84543, ISL84544
Electrical Specifications - 5V SupplyTest Conditions: V+ = +4.5V to +5.5V, GND = 0V, V
Unless Otherwise Specified (Continued)
TEMP
PARAMETERTEST CONDITIONS
DYNAMIC CHARACTERISTICS
Turn-ON Time, t
Turn-OFF Time, t
ON
OFF
Break-Before-Make Time Delay
(ISL84543, ISL84544), t
D
Charge Injection, QC
OFF IsolationR
Crosstalk (Channel-to-Channel)R
VNO or VNC = 3V, RL =1kΩ, CL = 35pF, VIN = 0 to 3V,
See Figure 1
VNO or VNC = 3V, RL =1kΩ, CL = 35pF, VIN = 0 to 3V,
See Figure 1
RL = 300Ω, CL = 35pF, VNO = VNC = 3V, VIN = 0 to 3V,
See Figure 3
= 1.0nF, VG = 0V, RG = 0Ω, See Figure 225-15pC
L
= 50Ω, CL = 5pF, f = 1MHz, See Figure 425-76-dB
L
= 50Ω, CL = 5pF, f = 1MHz, See Figure 625--90-dB
L
o
(
C)
25-35100ns
Full--240ns
25-2575ns
Full--150ns
Full210-ns
= 2.4V, V
INH
INL
MIN
(NOTE 6)TYP
= 0.8V (Note 5),
MAX
(NOTE 6) UNITS
NO or NC OFF Capacitance, C
COM OFF Capacitance,
C
COM(OFF)
COM ON Capacitance, C
COM(ON)
f = 1MHz, VNO or VNC = V
OFF
f = 1MHz, VNO or VNC = V
f = 1MHz, VNO or VNC = V
ISL84541/2/3
f = 1MHz, V
ISL84544
NO
or VNC = V
= 0V, See Figure 725-8-pF
COM
= 0V, See Figure 725-8-pF
COM
= 0V, See Figure 7,
COM
= 0V, See Figure 7,
COM
25-13-pF
25-20-pF
POWER SUPPLY CHARACTERISTICS
Power Supply RangeFull2.712V
Positive Supply Current, I+V+ = 5.5V, V
= 0V or V+, all channels on or offFull-10.00011µA
IN
DIGITAL INPUT CHARACTERISTICS
Input Voltage Low, V
Input Voltage High, V
INL
INH
Full--0.8V
Full2.4--V
NOTES:
5. V
= input voltage to perform proper function.
IN
6. The algebraic convention, whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.
o
7. Leakage parameter is 100% tested at high temp, and guaranteed by correlation at 25
C.
5
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